Home / 74,878,619.40-112,485,890.70-72,023,272.20

Finding the Fourth Proportional to 74,878,619.40, 112,485,890.70 and 72,023,272.20

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Solution

The fourth proportional to 74,878,619.40, 112,485,890.70 and 72,023,272.20 is: 108,196,465.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,878,619.40 : 112,485,890.70 = 72,023,272.20 : x
  2. Step 2: Convert to fraction form
    74,878,619.40/112,485,890.70 = 72,023,272.20/x
  3. Step 3: Cross multiply
    74,878,619.40x = 112,485,890.70 × 72,023,272.20
  4. Step 4: Simplify right side
    74,878,619.40x = 8,101,601,924,545,549
  5. Step 5: Solve for x
    x = 8,101,601,924,545,549/74,878,619.40
  6. Step 6: Final answer
    x = 108,196,465.02

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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.