Home / 90,875.52-136,162.08-31,678.56

Finding the Fourth Proportional to 90,875.52, 136,162.08 and 31,678.56

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Solution

The fourth proportional to 90,875.52, 136,162.08 and 31,678.56 is: 47,465.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,875.52 : 136,162.08 = 31,678.56 : x
  2. Step 2: Convert to fraction form
    90,875.52/136,162.08 = 31,678.56/x
  3. Step 3: Cross multiply
    90,875.52x = 136,162.08 × 31,678.56
  4. Step 4: Simplify right side
    90,875.52x = 4,313,418,621.00
  5. Step 5: Solve for x
    x = 4,313,418,621.00/90,875.52
  6. Step 6: Final answer
    x = 47,465.13

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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.