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Finding the Fourth Proportional to 65,275.83, 90,087.86 and 38,424.94

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Solution

The fourth proportional to 65,275.83, 90,087.86 and 38,424.94 is: 53,030.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,275.83 : 90,087.86 = 38,424.94 : x
  2. Step 2: Convert to fraction form
    65,275.83/90,087.86 = 38,424.94/x
  3. Step 3: Cross multiply
    65,275.83x = 90,087.86 × 38,424.94
  4. Step 4: Simplify right side
    65,275.83x = 3,461,620,486.07
  5. Step 5: Solve for x
    x = 3,461,620,486.07/65,275.83
  6. Step 6: Final answer
    x = 53,030.66

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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.