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Finding the Fourth Proportional to 70,605.59, 97,436.34 and 38,774.72

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Solution

The fourth proportional to 70,605.59, 97,436.34 and 38,774.72 is: 53,509.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,605.59 : 97,436.34 = 38,774.72 : x
  2. Step 2: Convert to fraction form
    70,605.59/97,436.34 = 38,774.72/x
  3. Step 3: Cross multiply
    70,605.59x = 97,436.34 × 38,774.72
  4. Step 4: Simplify right side
    70,605.59x = 3,778,066,314.14
  5. Step 5: Solve for x
    x = 3,778,066,314.14/70,605.59
  6. Step 6: Final answer
    x = 53,509.45

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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.