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Finding the Fourth Proportional to 78,703.40, 108,612.78 and 44,710.76

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Solution

The fourth proportional to 78,703.40, 108,612.78 and 44,710.76 is: 61,702.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,703.40 : 108,612.78 = 44,710.76 : x
  2. Step 2: Convert to fraction form
    78,703.40/108,612.78 = 44,710.76/x
  3. Step 3: Cross multiply
    78,703.40x = 108,612.78 × 44,710.76
  4. Step 4: Simplify right side
    78,703.40x = 4,856,159,939.51
  5. Step 5: Solve for x
    x = 4,856,159,939.51/78,703.40
  6. Step 6: Final answer
    x = 61,702.03

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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.