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Finding the Fourth Proportional to 70,129.79, 96,779.61 and 38,298.71

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Solution

The fourth proportional to 70,129.79, 96,779.61 and 38,298.71 is: 52,852.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,129.79 : 96,779.61 = 38,298.71 : x
  2. Step 2: Convert to fraction form
    70,129.79/96,779.61 = 38,298.71/x
  3. Step 3: Cross multiply
    70,129.79x = 96,779.61 × 38,298.71
  4. Step 4: Simplify right side
    70,129.79x = 3,706,533,733.41
  5. Step 5: Solve for x
    x = 3,706,533,733.41/70,129.79
  6. Step 6: Final answer
    x = 52,852.49

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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.