Home / 72,201,823.68-108,292,082.40-21,070,113.60

Finding the Fourth Proportional to 72,201,823.68, 108,292,082.40 and 21,070,113.60

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Solution

The fourth proportional to 72,201,823.68, 108,292,082.40 and 21,070,113.60 is: 31,602,061.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,201,823.68 : 108,292,082.40 = 21,070,113.60 : x
  2. Step 2: Convert to fraction form
    72,201,823.68/108,292,082.40 = 21,070,113.60/x
  3. Step 3: Cross multiply
    72,201,823.68x = 108,292,082.40 × 21,070,113.60
  4. Step 4: Simplify right side
    72,201,823.68x = 2,281,726,478,148,561
  5. Step 5: Solve for x
    x = 2,281,726,478,148,561/72,201,823.68
  6. Step 6: Final answer
    x = 31,602,061.58

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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.