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Finding the Fourth Proportional to 65,870.80, 90,878.08 and 37,560.08

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Solution

The fourth proportional to 65,870.80, 90,878.08 and 37,560.08 is: 51,819.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,870.80 : 90,878.08 = 37,560.08 : x
  2. Step 2: Convert to fraction form
    65,870.80/90,878.08 = 37,560.08/x
  3. Step 3: Cross multiply
    65,870.80x = 90,878.08 × 37,560.08
  4. Step 4: Simplify right side
    65,870.80x = 3,413,387,955.05
  5. Step 5: Solve for x
    x = 3,413,387,955.05/65,870.80
  6. Step 6: Final answer
    x = 51,819.44

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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.