Home / 99,064.16-136,708.80-56,623.76

Finding the Fourth Proportional to 99,064.16, 136,708.80 and 56,623.76

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Solution

The fourth proportional to 99,064.16, 136,708.80 and 56,623.76 is: 78,140.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,064.16 : 136,708.80 = 56,623.76 : x
  2. Step 2: Convert to fraction form
    99,064.16/136,708.80 = 56,623.76/x
  3. Step 3: Cross multiply
    99,064.16x = 136,708.80 × 56,623.76
  4. Step 4: Simplify right side
    99,064.16x = 7,740,966,281.09
  5. Step 5: Solve for x
    x = 7,740,966,281.09/99,064.16
  6. Step 6: Final answer
    x = 78,140.94

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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.