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Finding the Fourth Proportional to 77,045.58, 105,914.70 and 66,250.92

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Solution

The fourth proportional to 77,045.58, 105,914.70 and 66,250.92 is: 91,075.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,045.58 : 105,914.70 = 66,250.92 : x
  2. Step 2: Convert to fraction form
    77,045.58/105,914.70 = 66,250.92/x
  3. Step 3: Cross multiply
    77,045.58x = 105,914.70 × 66,250.92
  4. Step 4: Simplify right side
    77,045.58x = 7,016,946,316.52
  5. Step 5: Solve for x
    x = 7,016,946,316.52/77,045.58
  6. Step 6: Final answer
    x = 91,075.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.