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Finding the Fourth Proportional to 77,726.85, 115,984.04 and 69,349.22

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Solution

The fourth proportional to 77,726.85, 115,984.04 and 69,349.22 is: 103,482.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,726.85 : 115,984.04 = 69,349.22 : x
  2. Step 2: Convert to fraction form
    77,726.85/115,984.04 = 69,349.22/x
  3. Step 3: Cross multiply
    77,726.85x = 115,984.04 × 69,349.22
  4. Step 4: Simplify right side
    77,726.85x = 8,043,402,706.45
  5. Step 5: Solve for x
    x = 8,043,402,706.45/77,726.85
  6. Step 6: Final answer
    x = 103,482.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.