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Finding the Fourth Proportional to 65,305.66, 90,142.32 and 37,030.18

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Solution

The fourth proportional to 65,305.66, 90,142.32 and 37,030.18 is: 51,113.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,305.66 : 90,142.32 = 37,030.18 : x
  2. Step 2: Convert to fraction form
    65,305.66/90,142.32 = 37,030.18/x
  3. Step 3: Cross multiply
    65,305.66x = 90,142.32 × 37,030.18
  4. Step 4: Simplify right side
    65,305.66x = 3,337,986,335.22
  5. Step 5: Solve for x
    x = 3,337,986,335.22/65,305.66
  6. Step 6: Final answer
    x = 51,113.28

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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.