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Finding the Fourth Proportional to 70,636.50, 97,487.01 and 40,828.50

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Solution

The fourth proportional to 70,636.50, 97,487.01 and 40,828.50 is: 56,348.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,636.50 : 97,487.01 = 40,828.50 : x
  2. Step 2: Convert to fraction form
    70,636.50/97,487.01 = 40,828.50/x
  3. Step 3: Cross multiply
    70,636.50x = 97,487.01 × 40,828.50
  4. Step 4: Simplify right side
    70,636.50x = 3,980,248,387.79
  5. Step 5: Solve for x
    x = 3,980,248,387.79/70,636.50
  6. Step 6: Final answer
    x = 56,348.32

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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.