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Finding the Fourth Proportional to 65,159.48, 89,920.59 and 38,303.12

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Solution

The fourth proportional to 65,159.48, 89,920.59 and 38,303.12 is: 52,858.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,159.48 : 89,920.59 = 38,303.12 : x
  2. Step 2: Convert to fraction form
    65,159.48/89,920.59 = 38,303.12/x
  3. Step 3: Cross multiply
    65,159.48x = 89,920.59 × 38,303.12
  4. Step 4: Simplify right side
    65,159.48x = 3,444,239,149.24
  5. Step 5: Solve for x
    x = 3,444,239,149.24/65,159.48
  6. Step 6: Final answer
    x = 52,858.60

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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.