Home / 99,427.79-137,210.16-56,415.73

Finding the Fourth Proportional to 99,427.79, 137,210.16 and 56,415.73

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Solution

The fourth proportional to 99,427.79, 137,210.16 and 56,415.73 is: 77,853.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,427.79 : 137,210.16 = 56,415.73 : x
  2. Step 2: Convert to fraction form
    99,427.79/137,210.16 = 56,415.73/x
  3. Step 3: Cross multiply
    99,427.79x = 137,210.16 × 56,415.73
  4. Step 4: Simplify right side
    99,427.79x = 7,740,811,208.35
  5. Step 5: Solve for x
    x = 7,740,811,208.35/99,427.79
  6. Step 6: Final answer
    x = 77,853.60

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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.