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Finding the Fourth Proportional to 70,782.59, 97,680.67 and 38,952.23

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Solution

The fourth proportional to 70,782.59, 97,680.67 and 38,952.23 is: 53,754.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,782.59 : 97,680.67 = 38,952.23 : x
  2. Step 2: Convert to fraction form
    70,782.59/97,680.67 = 38,952.23/x
  3. Step 3: Cross multiply
    70,782.59x = 97,680.67 × 38,952.23
  4. Step 4: Simplify right side
    70,782.59x = 3,804,879,338.61
  5. Step 5: Solve for x
    x = 3,804,879,338.61/70,782.59
  6. Step 6: Final answer
    x = 53,754.45

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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.