Home / 77,127-106,430.82-42,669.66

Finding the Fourth Proportional to 77,127, 106,430.82 and 42,669.66

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Solution

The fourth proportional to 77,127, 106,430.82 and 42,669.66 is: 58,881.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,127 : 106,430.82 = 42,669.66 : x
  2. Step 2: Convert to fraction form
    77,127/106,430.82 = 42,669.66/x
  3. Step 3: Cross multiply
    77,127x = 106,430.82 × 42,669.66
  4. Step 4: Simplify right side
    77,127x = 4,541,366,902.92
  5. Step 5: Solve for x
    x = 4,541,366,902.92/77,127
  6. Step 6: Final answer
    x = 58,881.67

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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.