Home / 90,648-125,095.68-52,948.80

Finding the Fourth Proportional to 90,648, 125,095.68 and 52,948.80

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Solution

The fourth proportional to 90,648, 125,095.68 and 52,948.80 is: 73,070.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,648 : 125,095.68 = 52,948.80 : x
  2. Step 2: Convert to fraction form
    90,648/125,095.68 = 52,948.80/x
  3. Step 3: Cross multiply
    90,648x = 125,095.68 × 52,948.80
  4. Step 4: Simplify right side
    90,648x = 6,623,666,141.18
  5. Step 5: Solve for x
    x = 6,623,666,141.18/90,648
  6. Step 6: Final answer
    x = 73,070.19

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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.