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Finding the Fourth Proportional to 57,807.81, 79,746.12 and 45,038.16

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Solution

The fourth proportional to 57,807.81, 79,746.12 and 45,038.16 is: 62,130.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,807.81 : 79,746.12 = 45,038.16 : x
  2. Step 2: Convert to fraction form
    57,807.81/79,746.12 = 45,038.16/x
  3. Step 3: Cross multiply
    57,807.81x = 79,746.12 × 45,038.16
  4. Step 4: Simplify right side
    57,807.81x = 3,591,618,511.94
  5. Step 5: Solve for x
    x = 3,591,618,511.94/57,807.81
  6. Step 6: Final answer
    x = 62,130.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.