Home / 85,937.45-128,875.30-29,762.43

Finding the Fourth Proportional to 85,937.45, 128,875.30 and 29,762.43

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Solution

The fourth proportional to 85,937.45, 128,875.30 and 29,762.43 is: 44,632.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,937.45 : 128,875.30 = 29,762.43 : x
  2. Step 2: Convert to fraction form
    85,937.45/128,875.30 = 29,762.43/x
  3. Step 3: Cross multiply
    85,937.45x = 128,875.30 × 29,762.43
  4. Step 4: Simplify right side
    85,937.45x = 3,835,641,946.17
  5. Step 5: Solve for x
    x = 3,835,641,946.17/85,937.45
  6. Step 6: Final answer
    x = 44,632.95

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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.