Home / 86,681.14-129,948.75-42,284.98

Finding the Fourth Proportional to 86,681.14, 129,948.75 and 42,284.98

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Solution

The fourth proportional to 86,681.14, 129,948.75 and 42,284.98 is: 63,391.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,681.14 : 129,948.75 = 42,284.98 : x
  2. Step 2: Convert to fraction form
    86,681.14/129,948.75 = 42,284.98/x
  3. Step 3: Cross multiply
    86,681.14x = 129,948.75 × 42,284.98
  4. Step 4: Simplify right side
    86,681.14x = 5,494,880,294.78
  5. Step 5: Solve for x
    x = 5,494,880,294.78/86,681.14
  6. Step 6: Final answer
    x = 63,391.88

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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.