Home / 77,121.29-106,426.64-43,129.40

Finding the Fourth Proportional to 77,121.29, 106,426.64 and 43,129.40

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Solution

The fourth proportional to 77,121.29, 106,426.64 and 43,129.40 is: 59,518.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,121.29 : 106,426.64 = 43,129.40 : x
  2. Step 2: Convert to fraction form
    77,121.29/106,426.64 = 43,129.40/x
  3. Step 3: Cross multiply
    77,121.29x = 106,426.64 × 43,129.40
  4. Step 4: Simplify right side
    77,121.29x = 4,590,117,127.22
  5. Step 5: Solve for x
    x = 4,590,117,127.22/77,121.29
  6. Step 6: Final answer
    x = 59,518.16

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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.