Home / 57,390,342-86,076,639.20-20,990,220.16

Finding the Fourth Proportional to 57,390,342, 86,076,639.20 and 20,990,220.16

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Solution

The fourth proportional to 57,390,342, 86,076,639.20 and 20,990,220.16 is: 31,482,084.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,390,342 : 86,076,639.20 = 20,990,220.16 : x
  2. Step 2: Convert to fraction form
    57,390,342/86,076,639.20 = 20,990,220.16/x
  3. Step 3: Cross multiply
    57,390,342x = 86,076,639.20 × 20,990,220.16
  4. Step 4: Simplify right side
    57,390,342x = 1,806,767,607,440,886.25
  5. Step 5: Solve for x
    x = 1,806,767,607,440,886.25/57,390,342
  6. Step 6: Final answer
    x = 31,482,084.69

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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.