Home / 72,427,145.10-108,640,717.65-66,884,412.30

Finding the Fourth Proportional to 72,427,145.10, 108,640,717.65 and 66,884,412.30

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Solution

The fourth proportional to 72,427,145.10, 108,640,717.65 and 66,884,412.30 is: 100,326,618.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,427,145.10 : 108,640,717.65 = 66,884,412.30 : x
  2. Step 2: Convert to fraction form
    72,427,145.10/108,640,717.65 = 66,884,412.30/x
  3. Step 3: Cross multiply
    72,427,145.10x = 108,640,717.65 × 66,884,412.30
  4. Step 4: Simplify right side
    72,427,145.10x = 7,266,370,551,870,487
  5. Step 5: Solve for x
    x = 7,266,370,551,870,487/72,427,145.10
  6. Step 6: Final answer
    x = 100,326,618.45

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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.