Home / 86,418.04-119,279.10-56,278.48

Finding the Fourth Proportional to 86,418.04, 119,279.10 and 56,278.48

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Solution

The fourth proportional to 86,418.04, 119,279.10 and 56,278.48 is: 77,678.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,418.04 : 119,279.10 = 56,278.48 : x
  2. Step 2: Convert to fraction form
    86,418.04/119,279.10 = 56,278.48/x
  3. Step 3: Cross multiply
    86,418.04x = 119,279.10 × 56,278.48
  4. Step 4: Simplify right side
    86,418.04x = 6,712,846,443.77
  5. Step 5: Solve for x
    x = 6,712,846,443.77/86,418.04
  6. Step 6: Final answer
    x = 77,678.76

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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.