Home / 86,688,378.85-130,012,669.53-51,683,397.79

Finding the Fourth Proportional to 86,688,378.85, 130,012,669.53 and 51,683,397.79

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Solution

The fourth proportional to 86,688,378.85, 130,012,669.53 and 51,683,397.79 is: 77,513,233.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,688,378.85 : 130,012,669.53 = 51,683,397.79 : x
  2. Step 2: Convert to fraction form
    86,688,378.85/130,012,669.53 = 51,683,397.79/x
  3. Step 3: Cross multiply
    86,688,378.85x = 130,012,669.53 × 51,683,397.79
  4. Step 4: Simplify right side
    86,688,378.85x = 6,719,496,517,058,802
  5. Step 5: Solve for x
    x = 6,719,496,517,058,802/86,688,378.85
  6. Step 6: Final answer
    x = 77,513,233.10

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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.