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Finding the Fourth Proportional to 30,400.79, 45,507.76 and 25,916.77

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Solution

The fourth proportional to 30,400.79, 45,507.76 and 25,916.77 is: 38,795.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,400.79 : 45,507.76 = 25,916.77 : x
  2. Step 2: Convert to fraction form
    30,400.79/45,507.76 = 25,916.77/x
  3. Step 3: Cross multiply
    30,400.79x = 45,507.76 × 25,916.77
  4. Step 4: Simplify right side
    30,400.79x = 1,179,413,792.01
  5. Step 5: Solve for x
    x = 1,179,413,792.01/30,400.79
  6. Step 6: Final answer
    x = 38,795.50

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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.