Home / 86,323.12-129,440.52-39,535.90

Finding the Fourth Proportional to 86,323.12, 129,440.52 and 39,535.90

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Solution

The fourth proportional to 86,323.12, 129,440.52 and 39,535.90 is: 59,283.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,323.12 : 129,440.52 = 39,535.90 : x
  2. Step 2: Convert to fraction form
    86,323.12/129,440.52 = 39,535.90/x
  3. Step 3: Cross multiply
    86,323.12x = 129,440.52 × 39,535.90
  4. Step 4: Simplify right side
    86,323.12x = 5,117,547,454.67
  5. Step 5: Solve for x
    x = 5,117,547,454.67/86,323.12
  6. Step 6: Final answer
    x = 59,283.62

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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.