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Finding the Fourth Proportional to 65,312.68, 90,132.54 and 37,017.76

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Solution

The fourth proportional to 65,312.68, 90,132.54 and 37,017.76 is: 51,085.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,312.68 : 90,132.54 = 37,017.76 : x
  2. Step 2: Convert to fraction form
    65,312.68/90,132.54 = 37,017.76/x
  3. Step 3: Cross multiply
    65,312.68x = 90,132.54 × 37,017.76
  4. Step 4: Simplify right side
    65,312.68x = 3,336,504,733.91
  5. Step 5: Solve for x
    x = 3,336,504,733.91/65,312.68
  6. Step 6: Final answer
    x = 51,085.10

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1.5x scale

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.