Home / 77,122.47-106,428.58-43,130.96

Finding the Fourth Proportional to 77,122.47, 106,428.58 and 43,130.96

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Solution

The fourth proportional to 77,122.47, 106,428.58 and 43,130.96 is: 59,520.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,122.47 : 106,428.58 = 43,130.96 : x
  2. Step 2: Convert to fraction form
    77,122.47/106,428.58 = 43,130.96/x
  3. Step 3: Cross multiply
    77,122.47x = 106,428.58 × 43,130.96
  4. Step 4: Simplify right side
    77,122.47x = 4,590,366,826.84
  5. Step 5: Solve for x
    x = 4,590,366,826.84/77,122.47
  6. Step 6: Final answer
    x = 59,520.49

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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.