Home / 85,849,618.40-128,774,427.60-51,753,413.60

Finding the Fourth Proportional to 85,849,618.40, 128,774,427.60 and 51,753,413.60

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Solution

The fourth proportional to 85,849,618.40, 128,774,427.60 and 51,753,413.60 is: 77,630,120.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,849,618.40 : 128,774,427.60 = 51,753,413.60 : x
  2. Step 2: Convert to fraction form
    85,849,618.40/128,774,427.60 = 51,753,413.60/x
  3. Step 3: Cross multiply
    85,849,618.40x = 128,774,427.60 × 51,753,413.60
  4. Step 4: Simplify right side
    85,849,618.40x = 6,664,516,212,686,055
  5. Step 5: Solve for x
    x = 6,664,516,212,686,055/85,849,618.40
  6. Step 6: Final answer
    x = 77,630,120.40

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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.