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Finding the Fourth Proportional to 77,611.16, 107,116.53 and 45,795.78

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Solution

The fourth proportional to 77,611.16, 107,116.53 and 45,795.78 is: 63,205.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,611.16 : 107,116.53 = 45,795.78 : x
  2. Step 2: Convert to fraction form
    77,611.16/107,116.53 = 45,795.78/x
  3. Step 3: Cross multiply
    77,611.16x = 107,116.53 × 45,795.78
  4. Step 4: Simplify right side
    77,611.16x = 4,905,484,870.51
  5. Step 5: Solve for x
    x = 4,905,484,870.51/77,611.16
  6. Step 6: Final answer
    x = 63,205.92

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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.