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Finding the Fourth Proportional to 70,478.61, 97,263.29 and 38,648.65

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Solution

The fourth proportional to 70,478.61, 97,263.29 and 38,648.65 is: 53,336.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,478.61 : 97,263.29 = 38,648.65 : x
  2. Step 2: Convert to fraction form
    70,478.61/97,263.29 = 38,648.65/x
  3. Step 3: Cross multiply
    70,478.61x = 97,263.29 × 38,648.65
  4. Step 4: Simplify right side
    70,478.61x = 3,759,094,853.06
  5. Step 5: Solve for x
    x = 3,759,094,853.06/70,478.61
  6. Step 6: Final answer
    x = 53,336.68

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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.