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Finding the Fourth Proportional to 61,686.63, 85,126.80 and 34,830.27

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Solution

The fourth proportional to 61,686.63, 85,126.80 and 34,830.27 is: 48,065.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,686.63 : 85,126.80 = 34,830.27 : x
  2. Step 2: Convert to fraction form
    61,686.63/85,126.80 = 34,830.27/x
  3. Step 3: Cross multiply
    61,686.63x = 85,126.80 × 34,830.27
  4. Step 4: Simplify right side
    61,686.63x = 2,964,989,558.85
  5. Step 5: Solve for x
    x = 2,964,989,558.85/61,686.63
  6. Step 6: Final answer
    x = 48,065.35

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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.