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Finding the Fourth Proportional to 65,699.93, 98,548.52 and 21,326.63

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Solution

The fourth proportional to 65,699.93, 98,548.52 and 21,326.63 is: 31,989.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,699.93 : 98,548.52 = 21,326.63 : x
  2. Step 2: Convert to fraction form
    65,699.93/98,548.52 = 21,326.63/x
  3. Step 3: Cross multiply
    65,699.93x = 98,548.52 × 21,326.63
  4. Step 4: Simplify right side
    65,699.93x = 2,101,707,223.71
  5. Step 5: Solve for x
    x = 2,101,707,223.71/65,699.93
  6. Step 6: Final answer
    x = 31,989.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.