Home / 87,840,642.81-121,220,084.67-48,688,301.78

Finding the Fourth Proportional to 87,840,642.81, 121,220,084.67 and 48,688,301.78

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Solution

The fourth proportional to 87,840,642.81, 121,220,084.67 and 48,688,301.78 is: 67,189,855.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,840,642.81 : 121,220,084.67 = 48,688,301.78 : x
  2. Step 2: Convert to fraction form
    87,840,642.81/121,220,084.67 = 48,688,301.78/x
  3. Step 3: Cross multiply
    87,840,642.81x = 121,220,084.67 × 48,688,301.78
  4. Step 4: Simplify right side
    87,840,642.81x = 5,902,000,064,210,112
  5. Step 5: Solve for x
    x = 5,902,000,064,210,112/87,840,642.81
  6. Step 6: Final answer
    x = 67,189,855.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.