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Finding the Fourth Proportional to 61,978.36, 85,526.85 and 35,121.19

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Solution

The fourth proportional to 61,978.36, 85,526.85 and 35,121.19 is: 48,465.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,978.36 : 85,526.85 = 35,121.19 : x
  2. Step 2: Convert to fraction form
    61,978.36/85,526.85 = 35,121.19/x
  3. Step 3: Cross multiply
    61,978.36x = 85,526.85 × 35,121.19
  4. Step 4: Simplify right side
    61,978.36x = 3,003,804,748.95
  5. Step 5: Solve for x
    x = 3,003,804,748.95/61,978.36
  6. Step 6: Final answer
    x = 48,465.38

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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.