Home / 90,378.18-124,730.69-52,650

Finding the Fourth Proportional to 90,378.18, 124,730.69 and 52,650

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Solution

The fourth proportional to 90,378.18, 124,730.69 and 52,650 is: 72,662.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,378.18 : 124,730.69 = 52,650 : x
  2. Step 2: Convert to fraction form
    90,378.18/124,730.69 = 52,650/x
  3. Step 3: Cross multiply
    90,378.18x = 124,730.69 × 52,650
  4. Step 4: Simplify right side
    90,378.18x = 6,567,070,565.25
  5. Step 5: Solve for x
    x = 6,567,070,565.25/90,378.18
  6. Step 6: Final answer
    x = 72,662.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.