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Finding the Fourth Proportional to 84,904.80, 127,211.40 and 55,307.40

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Solution

The fourth proportional to 84,904.80, 127,211.40 and 55,307.40 is: 82,866.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,904.80 : 127,211.40 = 55,307.40 : x
  2. Step 2: Convert to fraction form
    84,904.80/127,211.40 = 55,307.40/x
  3. Step 3: Cross multiply
    84,904.80x = 127,211.40 × 55,307.40
  4. Step 4: Simplify right side
    84,904.80x = 7,035,731,784.36
  5. Step 5: Solve for x
    x = 7,035,731,784.36/84,904.80
  6. Step 6: Final answer
    x = 82,866.13

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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.