Home / 85,931.84-128,916.48-35,331.24

Finding the Fourth Proportional to 85,931.84, 128,916.48 and 35,331.24

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Solution

The fourth proportional to 85,931.84, 128,916.48 and 35,331.24 is: 53,004.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,931.84 : 128,916.48 = 35,331.24 : x
  2. Step 2: Convert to fraction form
    85,931.84/128,916.48 = 35,331.24/x
  3. Step 3: Cross multiply
    85,931.84x = 128,916.48 × 35,331.24
  4. Step 4: Simplify right side
    85,931.84x = 4,554,779,094.84
  5. Step 5: Solve for x
    x = 4,554,779,094.84/85,931.84
  6. Step 6: Final answer
    x = 53,004.56

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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.