Home / 77,075.22-105,955.82-66,280.38

Finding the Fourth Proportional to 77,075.22, 105,955.82 and 66,280.38

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Solution

The fourth proportional to 77,075.22, 105,955.82 and 66,280.38 is: 91,116.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,075.22 : 105,955.82 = 66,280.38 : x
  2. Step 2: Convert to fraction form
    77,075.22/105,955.82 = 66,280.38/x
  3. Step 3: Cross multiply
    77,075.22x = 105,955.82 × 66,280.38
  4. Step 4: Simplify right side
    77,075.22x = 7,022,791,681.41
  5. Step 5: Solve for x
    x = 7,022,791,681.41/77,075.22
  6. Step 6: Final answer
    x = 91,116.08

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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.