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Finding the Fourth Proportional to 65,326.32, 97,990.56 and 18,580.40

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Solution

The fourth proportional to 65,326.32, 97,990.56 and 18,580.40 is: 27,870.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,326.32 : 97,990.56 = 18,580.40 : x
  2. Step 2: Convert to fraction form
    65,326.32/97,990.56 = 18,580.40/x
  3. Step 3: Cross multiply
    65,326.32x = 97,990.56 × 18,580.40
  4. Step 4: Simplify right side
    65,326.32x = 1,820,703,801.02
  5. Step 5: Solve for x
    x = 1,820,703,801.02/65,326.32
  6. Step 6: Final answer
    x = 27,870.91

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1.5x scale

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.