Home / 86,568.90-129,877.65-42,197.10

Finding the Fourth Proportional to 86,568.90, 129,877.65 and 42,197.10

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Solution

The fourth proportional to 86,568.90, 129,877.65 and 42,197.10 is: 63,307.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,568.90 : 129,877.65 = 42,197.10 : x
  2. Step 2: Convert to fraction form
    86,568.90/129,877.65 = 42,197.10/x
  3. Step 3: Cross multiply
    86,568.90x = 129,877.65 × 42,197.10
  4. Step 4: Simplify right side
    86,568.90x = 5,480,460,184.82
  5. Step 5: Solve for x
    x = 5,480,460,184.82/86,568.90
  6. Step 6: Final answer
    x = 63,307.49

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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.