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Finding the Fourth Proportional to 77,018.55, 106,275.10 and 43,022.71

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Solution

The fourth proportional to 77,018.55, 106,275.10 and 43,022.71 is: 59,365.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,018.55 : 106,275.10 = 43,022.71 : x
  2. Step 2: Convert to fraction form
    77,018.55/106,275.10 = 43,022.71/x
  3. Step 3: Cross multiply
    77,018.55x = 106,275.10 × 43,022.71
  4. Step 4: Simplify right side
    77,018.55x = 4,572,242,807.52
  5. Step 5: Solve for x
    x = 4,572,242,807.52/77,018.55
  6. Step 6: Final answer
    x = 59,365.48

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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.