Home / 69,128.60-103,688.02-39,453.44

Finding the Fourth Proportional to 69,128.60, 103,688.02 and 39,453.44

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Solution

The fourth proportional to 69,128.60, 103,688.02 and 39,453.44 is: 59,177.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,128.60 : 103,688.02 = 39,453.44 : x
  2. Step 2: Convert to fraction form
    69,128.60/103,688.02 = 39,453.44/x
  3. Step 3: Cross multiply
    69,128.60x = 103,688.02 × 39,453.44
  4. Step 4: Simplify right side
    69,128.60x = 4,090,849,075.79
  5. Step 5: Solve for x
    x = 4,090,849,075.79/69,128.60
  6. Step 6: Final answer
    x = 59,177.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.