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Finding the Fourth Proportional to 70,502.81, 105,748.58 and 28,353.17

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Solution

The fourth proportional to 70,502.81, 105,748.58 and 28,353.17 is: 42,527.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,502.81 : 105,748.58 = 28,353.17 : x
  2. Step 2: Convert to fraction form
    70,502.81/105,748.58 = 28,353.17/x
  3. Step 3: Cross multiply
    70,502.81x = 105,748.58 × 28,353.17
  4. Step 4: Simplify right side
    70,502.81x = 2,998,307,801.25
  5. Step 5: Solve for x
    x = 2,998,307,801.25/70,502.81
  6. Step 6: Final answer
    x = 42,527.50

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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.