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Finding the Fourth Proportional to 61,985.47, 85,538.15 and 35,130.46

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Solution

The fourth proportional to 61,985.47, 85,538.15 and 35,130.46 is: 48,479.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,985.47 : 85,538.15 = 35,130.46 : x
  2. Step 2: Convert to fraction form
    61,985.47/85,538.15 = 35,130.46/x
  3. Step 3: Cross multiply
    61,985.47x = 85,538.15 × 35,130.46
  4. Step 4: Simplify right side
    61,985.47x = 3,004,994,817.67
  5. Step 5: Solve for x
    x = 3,004,994,817.67/61,985.47
  6. Step 6: Final answer
    x = 48,479.02

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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.