Home / 78,280,001.80-117,420,002.70-49,369,611.40

Finding the Fourth Proportional to 78,280,001.80, 117,420,002.70 and 49,369,611.40

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Solution

The fourth proportional to 78,280,001.80, 117,420,002.70 and 49,369,611.40 is: 74,054,417.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,280,001.80 : 117,420,002.70 = 49,369,611.40 : x
  2. Step 2: Convert to fraction form
    78,280,001.80/117,420,002.70 = 49,369,611.40/x
  3. Step 3: Cross multiply
    78,280,001.80x = 117,420,002.70 × 49,369,611.40
  4. Step 4: Simplify right side
    78,280,001.80x = 5,796,979,903,885,951
  5. Step 5: Solve for x
    x = 5,796,979,903,885,951/78,280,001.80
  6. Step 6: Final answer
    x = 74,054,417.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.