Home / 83,019,061.40-124,528,592.10-81,885,320.60

Finding the Fourth Proportional to 83,019,061.40, 124,528,592.10 and 81,885,320.60

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Solution

The fourth proportional to 83,019,061.40, 124,528,592.10 and 81,885,320.60 is: 122,827,980.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,019,061.40 : 124,528,592.10 = 81,885,320.60 : x
  2. Step 2: Convert to fraction form
    83,019,061.40/124,528,592.10 = 81,885,320.60/x
  3. Step 3: Cross multiply
    83,019,061.40x = 124,528,592.10 × 81,885,320.60
  4. Step 4: Simplify right side
    83,019,061.40x = 10,197,063,687,975,126
  5. Step 5: Solve for x
    x = 10,197,063,687,975,126/83,019,061.40
  6. Step 6: Final answer
    x = 122,827,980.90

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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.