Home / 86,451.40-129,681.15-42,025.18

Finding the Fourth Proportional to 86,451.40, 129,681.15 and 42,025.18

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Solution

The fourth proportional to 86,451.40, 129,681.15 and 42,025.18 is: 63,039.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,451.40 : 129,681.15 = 42,025.18 : x
  2. Step 2: Convert to fraction form
    86,451.40/129,681.15 = 42,025.18/x
  3. Step 3: Cross multiply
    86,451.40x = 129,681.15 × 42,025.18
  4. Step 4: Simplify right side
    86,451.40x = 5,449,873,671.36
  5. Step 5: Solve for x
    x = 5,449,873,671.36/86,451.40
  6. Step 6: Final answer
    x = 63,039.74

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1.5x scale

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.