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Finding the Fourth Proportional to 72,421.65, 97,458.19 and 72,421.65

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Solution

The fourth proportional to 72,421.65, 97,458.19 and 72,421.65 is: 97,458.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,421.65 : 97,458.19 = 72,421.65 : x
  2. Step 2: Convert to fraction form
    72,421.65/97,458.19 = 72,421.65/x
  3. Step 3: Cross multiply
    72,421.65x = 97,458.19 × 72,421.65
  4. Step 4: Simplify right side
    72,421.65x = 7,058,082,744.76
  5. Step 5: Solve for x
    x = 7,058,082,744.76/72,421.65
  6. Step 6: Final answer
    x = 97,458.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.