Home / 85,954,413.06-128,850,569.28-42,782,803.47

Finding the Fourth Proportional to 85,954,413.06, 128,850,569.28 and 42,782,803.47

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Solution

The fourth proportional to 85,954,413.06, 128,850,569.28 and 42,782,803.47 is: 64,133,863.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,954,413.06 : 128,850,569.28 = 42,782,803.47 : x
  2. Step 2: Convert to fraction form
    85,954,413.06/128,850,569.28 = 42,782,803.47/x
  3. Step 3: Cross multiply
    85,954,413.06x = 128,850,569.28 × 42,782,803.47
  4. Step 4: Simplify right side
    85,954,413.06x = 5,512,588,582,503,859
  5. Step 5: Solve for x
    x = 5,512,588,582,503,859/85,954,413.06
  6. Step 6: Final answer
    x = 64,133,863.36

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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.