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Finding the Fourth Proportional to 65,430.76, 90,295.66 and 37,138.26

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Solution

The fourth proportional to 65,430.76, 90,295.66 and 37,138.26 is: 51,251.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,430.76 : 90,295.66 = 37,138.26 : x
  2. Step 2: Convert to fraction form
    65,430.76/90,295.66 = 37,138.26/x
  3. Step 3: Cross multiply
    65,430.76x = 90,295.66 × 37,138.26
  4. Step 4: Simplify right side
    65,430.76x = 3,353,423,697.95
  5. Step 5: Solve for x
    x = 3,353,423,697.95/65,430.76
  6. Step 6: Final answer
    x = 51,251.49

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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.