Home / 77,618.45-107,095.57-56,139.68

Finding the Fourth Proportional to 77,618.45, 107,095.57 and 56,139.68

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Solution

The fourth proportional to 77,618.45, 107,095.57 and 56,139.68 is: 77,459.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,618.45 : 107,095.57 = 56,139.68 : x
  2. Step 2: Convert to fraction form
    77,618.45/107,095.57 = 56,139.68/x
  3. Step 3: Cross multiply
    77,618.45x = 107,095.57 × 56,139.68
  4. Step 4: Simplify right side
    77,618.45x = 6,012,311,156.61
  5. Step 5: Solve for x
    x = 6,012,311,156.61/77,618.45
  6. Step 6: Final answer
    x = 77,459.82

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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.