Home / 78,413.08-108,210.64-42,603.16

Finding the Fourth Proportional to 78,413.08, 108,210.64 and 42,603.16

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Solution

The fourth proportional to 78,413.08, 108,210.64 and 42,603.16 is: 58,792.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,413.08 : 108,210.64 = 42,603.16 : x
  2. Step 2: Convert to fraction form
    78,413.08/108,210.64 = 42,603.16/x
  3. Step 3: Cross multiply
    78,413.08x = 108,210.64 × 42,603.16
  4. Step 4: Simplify right side
    78,413.08x = 4,610,115,209.62
  5. Step 5: Solve for x
    x = 4,610,115,209.62/78,413.08
  6. Step 6: Final answer
    x = 58,792.68

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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.