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Finding the Fourth Proportional to 65,335.34, 90,119.76 and 51,885.26

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Solution

The fourth proportional to 65,335.34, 90,119.76 and 51,885.26 is: 71,567.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,335.34 : 90,119.76 = 51,885.26 : x
  2. Step 2: Convert to fraction form
    65,335.34/90,119.76 = 51,885.26/x
  3. Step 3: Cross multiply
    65,335.34x = 90,119.76 × 51,885.26
  4. Step 4: Simplify right side
    65,335.34x = 4,675,887,178.74
  5. Step 5: Solve for x
    x = 4,675,887,178.74/65,335.34
  6. Step 6: Final answer
    x = 71,567.50

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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.