Home / 85,453.02-128,142.64-29,298.62

Finding the Fourth Proportional to 85,453.02, 128,142.64 and 29,298.62

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Solution

The fourth proportional to 85,453.02, 128,142.64 and 29,298.62 is: 43,935.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,453.02 : 128,142.64 = 29,298.62 : x
  2. Step 2: Convert to fraction form
    85,453.02/128,142.64 = 29,298.62/x
  3. Step 3: Cross multiply
    85,453.02x = 128,142.64 × 29,298.62
  4. Step 4: Simplify right side
    85,453.02x = 3,754,402,515.16
  5. Step 5: Solve for x
    x = 3,754,402,515.16/85,453.02
  6. Step 6: Final answer
    x = 43,935.28

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1.5x scale

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.